Wut? Internets? How? Plz?

Yeah, that's... Is the trick supposed to be that it happened so quickly? The lights out was kind of cheap, I think. I figured he was out of the bag as soon as he disappeared into it, and something else was going to unexpectedly happen.

Looked like tv magic to me...those lights out looked like a cut.

*british

Adding video to channels (British) - requested by ant.

He did warn everyone that it's a stupid trick.

He was never inside the bag, it was wrapped around him.
Afterwards it wasn't as filled as much as before the lights out.

Yeah, they used some very easy method to pull this off, no matter which way they did it. I can think of a few ways to do it. It's made incredibly easy to do, as well, due to the fact that Teller is allowed to get in it first and also that the bag never leaves it's origin (at the setup anyway--it doesn't matter after Teller is out).

I would use the "bag within a bag" type setup. Essentially when Teller gets in, there is already an opening at the bottom (with the stage sitting right there). Teller is standing on the stage, basically. With the second hole pulled up past him and cinched shut once Penn closes the other end (stopping helium from getting out).

Then they flash out the lights, and Teller merely pushes the bag off him, and making sure to cinch any slack off the bottom so it doesn't "droop" or look bigger than it should--if that was even needed (as they may have put a mild adhesive on the ground to keep the bag in place; Teller can also do it, but it's easier the other way).

It does make for a nice illusion.

I'm thinking that the bag was open at the bottom when Teller stepped in. He stays upright long enough for us to see that his head is in the bag, then quickly crouches, pops under at the bottom, and seals the bag after himself.

He tugs gently on the bottom to remain hidden, and so the guy holding the string doesn't notice the weight change.

We never get to see the bottom, because the lights are still too dim immediately after he is revealed.

The helium quickly lifts the bag too high for us to see the bottom, but it does have a sort of heart shape at one point, suggesting a seal in the middle of the bottom, rather than the straight edge a factory-made bag would have.